(542-t)-130=204
542 – t – 130 = 204
– t = 204 + 130 – 542
-t = -208
t = 208
927-(267+n)=349
927 – 267 – n = 349
– n = 349 + 267 – 927
-n = -311
n = 311
98-((45+ n)-38)=48
98-(45+n-38)=48
98 – 45 – n + 38 = 48
– n = 48 – 38 + 45 – 98
-n = -43
n = 43
(542-t)-130=204
542 – t – 130 = 204
– t = 204 + 130 – 542
-t = -208
t = 208
927-(267+n)=349
927 – 267 – n = 349
– n = 349 + 267 – 927
-n = -311
n = 311
98-((45+ n)-38)=48
98-(45+n-38)=48
98 – 45 – n + 38 = 48
– n = 48 – 38 + 45 – 98
-n = -43
n = 43